minor fixes

This commit is contained in:
George 2021-02-06 12:42:07 +03:00
parent 932589744c
commit a23853c141
3 changed files with 3 additions and 3 deletions

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@ -93,7 +93,7 @@ ClickHouse has only one physical order, which is determined by `ORDER BY` clause
- Cascade `UPDATE/DELETE` queries are not supported by the `MaterializeMySQL` engine. - Cascade `UPDATE/DELETE` queries are not supported by the `MaterializeMySQL` engine.
- Replication can be easily broken. - Replication can be easily broken.
- Manual operations on database and tables are forbidden. - Manual operations on database and tables are forbidden.
- `MaterializeMySQL` is influenced by [optimize_on_insert](../../operations/settings/settings.md#optimize-on-insert) settings. There is a merge of data in the corresponding table in `MaterializeMySQL` database when a table in MySQL server changes. - `MaterializeMySQL` is influenced by [optimize_on_insert](../../operations/settings/settings.md#optimize-on-insert) setting. The data is merged in the corresponding table in the `MaterializeMySQL` database when a table in the MySQL server changes.
## Examples of Use {#examples-of-use} ## Examples of Use {#examples-of-use}

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@ -2594,7 +2594,7 @@ Default value: `16`.
## optimize_on_insert {#optimize-on-insert} ## optimize_on_insert {#optimize-on-insert}
Do the same transformation for inserted block of data as if merge was done on this block (e.g. replacing, collapsing, aggregating...). Enables or disables data transformation before the insertion, as if merge was done on this block (e.g. replacing, collapsing, aggregating...).
Possible values: Possible values:

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@ -59,7 +59,7 @@ A `SELECT` query can contain `DISTINCT`, `GROUP BY`, `ORDER BY`, `LIMIT`… Note
The execution of [ALTER](../../../sql-reference/statements/alter/index.md) queries on materialized views has limitations, so they might be inconvenient. If the materialized view uses the construction `TO [db.]name`, you can `DETACH` the view, run `ALTER` for the target table, and then `ATTACH` the previously detached (`DETACH`) view. The execution of [ALTER](../../../sql-reference/statements/alter/index.md) queries on materialized views has limitations, so they might be inconvenient. If the materialized view uses the construction `TO [db.]name`, you can `DETACH` the view, run `ALTER` for the target table, and then `ATTACH` the previously detached (`DETACH`) view.
Note that materialized view is influenced by [optimize_on_insert](../../../operations/settings/settings.md#optimize-on-insert) settings. There is a merge of data before the insertion in a view. Note that materialized view is influenced by [optimize_on_insert](../../../operations/settings/settings.md#optimize-on-insert) setting. The data is merged before the insertion into a view.
Views look the same as normal tables. For example, they are listed in the result of the `SHOW TABLES` query. Views look the same as normal tables. For example, they are listed in the result of the `SHOW TABLES` query.